US2626429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making storage battery separators
Assignee: Dewey and Almy Chemical Co
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Filing: 1952-03-17
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Granted: 1953-01-27
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Expires: 1972-03-17
Abstract
No abstract record available.
Inventors
- 👤 Merrill Edward Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:13
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; H; H01; H01M; H01M50/00; H01M50/40; H01M50/403; H01M50/406; H01M50/409; H01M50/44; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THAT PROCESS OF MANUFACTURING SEPARATORS FOR STORAGE BATTERIES WHICH COMPRISES THE FOLLOWING STEPS: IMPREGNATING A FELTED WEB WITH A SOLUTION OF AN ACID-RESISTANT, THERMOSETTING RESIN, DRYING THE WEB, FORMING RIBS BY DISTORTING THE WEB TO FROM RIBBED PORTIONS LYING IN A PLANE ABOVE THE REMAINING AREAS OF THE WEB, CURING ONLY THE RESIN IN THE RIBS UNDER HEAT SAID PRESSURE WHILE MAINTAINING THE AREAS IN THE WEB DESIGNED TO BE PERMEABLE TO ELECTROLYTE ENTIRELY OUT OF CONTACT WITH THE HEATED PRESSURE-IMPARTING BODY, APPLYING A SOLUTION OF RESIN TO THE SURFACE OF THE
Claim 2
Dependent Claim
92 words
THAT PROCESS OF MANUFACTURING SEPARATORS FOR STORAGE BATTERIES WHICH COMPRISES THE FOLLOWING STEPS: IMPREGNATING A FELTED WEB WITH A SOLUTION OF AN ACID-RESISTANT, THERMOSETTING RESIN, DRYING THE WEB, FORMING RIBS BY DISTORTING THE WEB TO FROM RIBBED PORTIONS LYING IN A PLANE ABOVE THE REMAINING AREAS OF THE WEB, CURING ONLY THE RESIN IN THE RIBS UNDER HEAT SAID PRESSURE WHILE MAINTAINING THE AREAS IN THE WEB DESIGNED TO BE PERMEABLE TO ELECTROLYTE ENTIRELY OUT OF CONTACT WITH THE HEATED PRESSURE-IMPARTING BODY, APPLYING A SOLUTION OF RESIN TO THE SURFACE OF THE
References Cited (Backward Citations)
US1206983A
Cited
US1357378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |